Synthesizing BPF events is only supported for root. Silent warning msg
when non-root user runs perf-record.
Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
Cc: Jiri Olsa <jo...@redhat.com>
Reported-by: David Carrillo-Cisneros <davi...@fb.com>
Tested-by: David Carrillo-Cisneros <davi...@fb.com>
Signed-off-by: Song Liu <songliubrav...@fb.com>
---
tools/perf/util/bpf-event.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c
index 796ef793f4ce..62dda96b0096 100644
--- a/tools/perf/util/bpf-event.c
+++ b/tools/perf/util/bpf-event.c
@@ -236,8 +236,8 @@ int perf_event__synthesize_bpf_events(struct perf_tool
*tool,
pr_debug("%s: can't get next program: %s%s",
__func__, strerror(errno),
errno == EINVAL ? " -- kernel too old?" : "");
- /* don't report error on old kernel */
- err = (errno == EINVAL) ? 0 : -1;
+ /* don't report error on old kernel or EPERM */
+ err = (errno == EINVAL || errno == EPERM) ? 0 : -1;
break;
}
fd = bpf_prog_get_fd_by_id(id);
--
2.17.1
